Improvement in ventilators for windows



UNITED .STATEs PATENT OEEIcE. i

THOMAS w. BRAOHER, OF NEW YORK, N. Y;

IMPROVEMENT IN VENTlLATORSFOR WINDO WS.

Specification forming part of Letters Patent No. 1 78,103, dated May 30,1876; application filed April 27, 1876. V

To all whom it may concern:

Be it known that I, THOMAS W. BRAGHER,

of the city, county, and State of New York,

have invented a newand useful Improvement in Ventilators for Windows,which improve ment is fully set forth in the following specification,reference being had to the accompanying drawing, in which Figure 1represents a face view of my ventilator. Fig. 2 is a transverse sectionof the same. Fig.3 is a modification of the same;

Similar letters indicate corresponding parts.

This invention consists in a frame containing a layer of textilematerial and a layer of wire-gauze, so that by said frame the textilematerial and the wire-gauze are firmly confined in their position,thereby preventing the textile material from shrinking, while at thesame-time the wire-gauze forms a support for the textile material,whereby the latter can be readily cleaned from dust or other impuritiesadhering to the same, and a "ventilator for windows .is obtained whichadmits the entrance of pure air, while dust or other impurities areeffectually excluded It is a common practice to usefor ventilatingpurposes, particularly in railroad-cars, frames in which a sheet ofwire-gauze is secured, and

' which fit the window-frames when the sashes firmly secured a sheet, a,of I textile material, and also a sheet, I), of wire-gauze or perforatedsheetmetal, so that both sheets are retained securely in the desiredposition. The sheet 12 of wire-gauze serves to support the textilematerial, while the frame prevents the latter from shrinking by theaction of moisture.

If my ventilator is fitted to a window, the textile material preventsthe entrance of dust or other impurities, while the pure air can freelypass through the meshes of the two sheets, and if the textile materialhas become choked by dust or other impurities, it can be readily cleanedby beating or shaking without incurring the danger that the same willbecome displaced.

When my ventilator is made corrugated, as shown in Fig. '3, I secure thetextile material to the wire-gauze by stitches at the corners, so

as to secure the same still-more firmly in its position,

I am aware that loose cotton fiber has been employed between perforated.plates in the ctlmstruction of ventilators, and this I do not c aim.

Whatl claim as new, and desire to secure by Letters Patent, is-

A ventilator for windows, composed of a frame, A, containing a sheet, a,of textile material, and a supporting-sheet, b, of wire-gauze orperforated sheet metal, substantially as shown and described.

In testimony that I claim foregoing I have hereunto set my hand and sealthis 21st day of April, 1876.

THOMAS W. BRAOHER. [L.

Witnesses:

A. H. NoNEs, H. BEiiGGEMANN.

